Carlsbad video game maker sold

Mob Science, the Carlsbad-based developer of the popular social media game "Legends: Rise of a Hero," has been sold to the Social Gaming Network, it was announced Thursday.

Social Gaming Network, SGN, bought the 5-year-old company for an undisclosed amount, SGN spokesman Mark Lindsay said. He said in total, SGN has spent $28 million to acquire four companies since its founding in 2010.